计及长线路参数扰动的新能源黑启动工程分析  

Analysis of New Energy Black Start⁃up Engineering Considering Parameter Perturbation of Long Line

作　　者：王华昕 刘美娜 褚启迪 WANG Huaxin;LIU Meina;CHU Qidi(Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海电力大学,上海200090

出　　处：《高压电器》2023年第3期99-107,共9页High Voltage Apparatus

基　　金：国家风光储输示范工程仿真系统建模与黑启动试验方法研究(SGJBTZ200YXJS)。

摘　　要：大量电力电子设备组成的张北新能源黑启动系统处于一种较脆弱的状态,长线路的电容电感参数受地域环境和气压条件等外界因素的干扰,容易引起电压电流的畸变从而导致整个系统的启动失败。因此,文中首先以张北风光储黑启动工程的拓扑结构为研究基础,鉴于微源输出外特性的差异性和集中线路的不适用性,推导了不同控制策略的电源输出阻抗模型,建立了基于Π单元传输线路等效线路阻抗模型;其次,通过伯德图分析线路电阻、电感和电容参数变化时系统的谐振特性;最后,在Pscad/Emtdc仿真软件中验证了黑启动长距离输电谐振机理的有效性和正确性。Zhangbei new energy black start⁃up system,which is composed of a large number of power electronic equipment,is in a relatively fragile state.The capacitance and inductance parameters of long lines can,due to such external factors as territory environment and atmospheric pressure conditions,easily cause voltage and current dis⁃tortion and thus lead to start⁃up failure of the whole system.Therefore,the topological structure of Zhangbei wind and solar storage black start⁃up project is taken as the research base firstly in this paper and,considering the differences of micro source output external characteristics and the unsuitability of centralized lines,the power output impedance model of different control strategies is derived and the equivalent line impedance model of transmission line based onΠunit is set up.Secondly,the resonance characteristics of the system,in case of of variation of such parameters as re⁃sistance,inductance and capacitance,are analyzed by Bode diagram.Finally,the effectiveness and correctness of black start⁃up long distance transmission resonance mechanism are verified in Pscad/Emtdc simulation software.

关 键 词：新能源黑启动 长线路参数 谐振特性 等效阻抗模型 

分 类 号：TM73[电气工程—电力系统及自动化]